mailmap: add entries for Sven Eckelmann

Map the defunc mail addresses to the currently used mail address (listed in
MAINTAINERS).

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

.mailmap

@@ -667,6 +667,11 @@ Sudarshan Rajagopalan <quic_sudaraja@quicinc.com> <sudaraja@codeaurora.org>
 Sudeep Holla <sudeep.holla@arm.com> Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
 Sumit Semwal <sumit.semwal@ti.com>
 Surabhi Vishnoi <quic_svishnoi@quicinc.com> <svishnoi@codeaurora.org>
+Sven Eckelmann <sven@narfation.org> <seckelmann@datto.com>
+Sven Eckelmann <sven@narfation.org> <sven.eckelmann@gmx.de>
+Sven Eckelmann <sven@narfation.org> <sven.eckelmann@open-mesh.com>
+Sven Eckelmann <sven@narfation.org> <sven.eckelmann@openmesh.com>
+Sven Eckelmann <sven@narfation.org> <sven@open-mesh.com>
 Takashi YOSHII <takashi.yoshii.zj@renesas.com>
 Tamizh Chelvam Raja <quic_tamizhr@quicinc.com> <tamizhr@codeaurora.org>
 Taniya Das <quic_tdas@quicinc.com> <tdas@codeaurora.org>